| Event | Time | Meet | Date |
|---|---|---|---|
| 100m Backstroke | 1:43.78 | 2026 Joanne Malar Invitational | 2026-01-16 |
| 100m Breaststroke | 2:01.97 | Gus Ryder Memorial Cup 2025 | 2025-11-07 |
| 100m Butterfly | 2:09.17 | 2026 Joanne Malar Invitational | 2026-01-16 |
| 100m Freestyle | 1:33.59 | 2026 Joanne Malar Invitational | 2026-01-16 |
| 100m IM | 1:49.98 | Hall of Fame | 2025-10-18 |
| 200m Backstroke | 4:04.58 | Gus Ryder Memorial Cup 2025 | 2025-11-07 |
| 200m Freestyle | 3:28.90 | 2026 Joanne Malar Invitational | 2026-01-16 |
| 200m IM | 3:49.74 | 2026 Joanne Malar Invitational | 2026-01-16 |
| 400m Freestyle | 7:20.75 | 2026 Joanne Malar Invitational | 2026-01-16 |
| 50m Backstroke | 50.89 | MAC Jingle Bell | 2025-12-12 |
| 50m Breaststroke | 58.16 | Gus Ryder Memorial Cup 2025 | 2025-11-07 |
| 50m Butterfly | 54.40 | MAC Jingle Bell | 2025-12-12 |
| 50m Freestyle | 41.48 | MAC Jingle Bell | 2025-12-12 |
Mendez-Lechuga, Juliana's top personal bests include 100m Backstroke (1:43.78), 100m Breaststroke (2:01.97), 100m Butterfly (2:09.17), 100m Freestyle (1:33.59), 100m IM (1:49.98).
Mendez-Lechuga, Juliana swims for Lakeshore Swim Club.
Mendez-Lechuga, Juliana has competed in 6 meets.